<template>
  <div>
  <!-- 面包屑导航区域 -->
 <el-breadcrumb separator-class="el-icon-arrow-right">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
     <el-breadcrumb-item>用户管理</el-breadcrumb-item>
     <el-breadcrumb-item>用户列表</el-breadcrumb-item>
 </el-breadcrumb>
  
  <!-- 卡片视图区域 -->
<el-card>
    <!-- 搜索区域 -->
 <el-row :gutter="20">
   <el-col :span="7">
     <el-input placeholder="请输入内容" 
      v-model="queryInfo.query"
      clearable @clear="getUserList"
     >
     <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
     </el-input>
  </el-col>
  <el-col :span="4">
      <el-button type="primary" @click="addDialogVisible=true">添加用户</el-button>
  </el-col>
 </el-row>
    <!-- 用户列表区域 -->
    <el-table :data="userlist" border stripe="">
      <el-table-column label="#" type="index"></el-table-column>
      <el-table-column label="姓名" prop="username"></el-table-column>
      <el-table-column label="邮箱" prop="email"></el-table-column>
      <el-table-column label="电话" prop="mobile"></el-table-column>
      <el-table-column label="角色" prop="role_name"></el-table-column>
      <el-table-column label="状态" prop="mg_state">
        <template slot-scope="scope">
          <!-- 这里使用双向数据绑定这样就能对数据进行操作 -->
           <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)"></el-switch>
        </template>
      </el-table-column>
      <el-table-column label="操作" width="180px">
        <template slot-scope="scope">
          <!-- 修改按钮  -->
            <el-button type="primary" size="mini" icon="el-icon-edit" @click="showEditDialog(scope.row.id)"></el-button>
          <!-- 删除按钮 -->
            <el-button type="danger" size="mini" icon="el-icon-delete" @click="removeUserById(scope.row.id)"></el-button>
          <!-- 分配角色按钮 -->  
            <el-tooltip  effect="dark" content="分配角色" placement="top" :enterable="false">
             <el-button type="warning" size="mini" icon="el-icon-setting" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页区域 -->
     <el-pagination
      @size-change="handleSizeChange"
      @current-change="handleCurrentChange"
      :current-page="queryInfo.pagenum"
      :page-sizes="[1,2,5]"
      :page-size="queryInfo.pagesize"
      layout="total, prev, pager, next,sizes,jumper"
      :total="total">
    </el-pagination>
</el-card>

  <!-- 添加用户对话框 -->
  <el-dialog
  title="添加用户"
  :visible.sync="addDialogVisible"
  width="50%"
  @close ="addDialogClosed"
  >
    <!-- 内容主体区域 -->
<el-form ref="addForm" :model="addForm" label-width="70px" :rules="addFormRules">
  <el-form-item label="用户名" prop="username">
    <el-input v-model="addForm.username"></el-input>
  </el-form-item> 
  <el-form-item label="密码" prop="password">
    <el-input v-model="addForm.password"></el-input>
  </el-form-item> 
  <el-form-item label="邮箱" prop="email">
    <el-input v-model="addForm.email"></el-input>
  </el-form-item> 
  <el-form-item label="手机" prop="mobile">
    <el-input v-model="addForm.mobile"></el-input>
  </el-form-item> 
 </el-form>
 
    <!-- 底部区域 -->
  <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
  </span>
</el-dialog>

  <!-- 修改用户对话框 -->
  <el-dialog
  title="修改用户"
  :visible.sync="editDialogVisible"
  width="30%"
  @close="editDialogClosed"
  >
   <!-- 内容主体区域 -->
<el-form ref="editFormRoule" :model="editForm" label-width="70px" :rules="editFormRoules">
     <el-form-item label="用户名">
        <el-input v-model="editForm.username" disabled></el-input>
    </el-form-item> 
      <el-form-item label="邮箱" prop="email">
        <el-input v-model="editForm.email" ></el-input>
    </el-form-item> 
      <el-form-item label="手机号" prop="mobile">
        <el-input v-model="editForm.mobile" ></el-input>
    </el-form-item> 
 </el-form>  
      <span slot="footer" class="dialog-footer">
      <el-button @click="editDialogVisible = false">取 消</el-button>
      <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
   </el-dialog>

   <!-- 分配角色的对话框 -->
  <el-dialog
  title="提示"
  :visible.sync="setRoleDialogVisible"
  width="30%"
  @close="setRoleDialogClosed"
  >
   <div>
        <p>当前的用户:{{userinfo.username}}</p>
        <p>当前的用户:{{userinfo.role_name}}</p>
   </div>
   <p>分配新角色
   <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
      v-for="item in rolesList"
      :key="item.id"
      :label="item.roleName"
      :value="item.id">
    </el-option>
  </el-select>
  </p>
  <span slot="footer" class="dialog-footer">
    <el-button @click="dialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
  </span>
</el-dialog>

</div>
</template>

<script>
 export default{
     data(){
       //验证邮箱规则
       var checkEmail = (rule,value,cb)=>{
           //验证邮箱的正则表达式
           const regEmail = /^\w+((-\w+)|(\.\w+))*@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/
            if(regEmail.test(value))
            {
              //合法邮箱格式
              return cb()
            }
            cb(new Error("请输入合法邮箱"))
       }
       //验证手机号规则
       var checkMobile = (rule,value,cb)=>{
           //验证邮箱的正则表达式
           const regMobile = /^(13[0-9]|14[01456879]|15[0-35-9]|16[2567]|17[0-8]|18[0-9]|19[0-35-9])\d{8}$/

            if(regMobile.test(value))
            {
              //合法邮箱格式
              return cb()
            }
            cb(new Error("请输入合法手机号"))
       }
       return{
         //获取用户列表的参数对象
         queryInfo:{
           query:"",
           pagenum:1,
           pagesize:2    
         },
         userlist: [],
         total: 0,
         //控制添加用户的显示与隐藏
         addDialogVisible:false,
         //修改用户的显示与隐藏
         editDialogVisible:false,
         //添加用户的表单数据
         addForm:{
        username: '',
        password: '',
        email: '',
        mobile: ''
         },
         //查询到用户的数据
         editForm:{},
         //添加表单的验证规则对象
         addFormRules:{
            //账号验证
           username:[
              { required: true, message: '请输入用户名', trigger: 'blur' },
              { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger:'blur'} 
               ],
            //密码验证
           password:[
              { required: true, message: '请输入密码', trigger: 'blur' },
              { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger:'blur'} 
               ],
            //邮箱验证
           email:[
              { required: true, message: '请输入邮箱', trigger: 'blur' },
              {validator:checkEmail,trigger:'blur'}
               ],
            //手机号验证
           mobile:[
              { required: true, message: '请输入手机号', trigger: 'blur' },
              {validator:checkMobile,trigger:'blur'}
               ]     
               
         },
        //修改表单的验证规则
        editFormRoules:{
         //邮箱验证
           email:[
              { required: true, message: '请输入邮箱', trigger: 'blur' },
              {validator:checkEmail,trigger:'blur'}
               ],
            //手机号验证
           mobile:[
              { required: true, message: '请输入手机号', trigger: 'blur' },
              {validator:checkMobile,trigger:'blur'}
               ]     
           },
           //控制分配角色对话框的显示与隐藏
           setRoleDialogVisible:false,
           //需要分配的角色的用户信息
           userinfo:{} ,
           //使用角色的数据列表
           rolesList:[],
           //已选中的角色id值
           selectedRoleId:""
           
       }
     },
     created(){
       this.getUserList()
     },
     methods:{
     async getUserList()
     {
       const{data:res} = await this.$http.get("users",{
         params:this.queryInfo
       })
       if(res.meta.status!==200)
       {
         return this.$message.error("获取用户列表失败")
       }
          this.userlist=res.data.users;
          this.total = res.data.total 
     },
     //监听pagesize改变的事件
     handleSizeChange(newSize)
     {
        this.queryInfo.pagesize=newSize
        this.getUserList()
     },
     //监听 页码值 的事件
     handleCurrentChange(newPage)
     {
        this.queryInfo.pagenum=newPage
        this.getUserList()
     },
     //监听switch方法
   async userStateChanged(userinfo)
     {
       console.log(userinfo.mg_state)
       console.log(userinfo.id)
      const{data:res} = await this.$http.put( 
       `users/${userinfo.id}
       /state/${userinfo.mg_state}`
      )
      console.log(res)
      if(res.meta.status!=200){
        userinfo.mg_state = !userinfo.mg_state;
        return this.$message.error("更新失败!") 
      }
       this.$message.success("更新成功")
     },
     //监听添加用户对话框的关闭事件
     addDialogClosed()
     {
        this.$refs.addForm.resetFields();
     },
     //点击按钮，添加新用户
     addUser()
     {
      this.$refs.addForm.validate(async valid =>{
        if(!valid) return
        //进行提交操作
        const {data : res} =await this.$http.post("users",this.addForm)
        if(res.meta.status!==201)
        {
          this.$message.error("用户添加失败!")
        }
        this.$message.success("添加成功!")
        //隐藏添加用户的对话框
        this.addDialogVisible=false
        //重新获取数据
        this.getUserList();
      })
     },
       //点击按钮 修改用户
     async showEditDialog(id)
      {
       const{data:res} = await this.$http.get("users/"+id)
         if(res.meta.status!==200)
         {
           return this.$message.error("查询用户信息失败！")
         }
       this.editForm = res.data   
        this.editDialogVisible=true
      },
     //监听修改用户对话框的关闭事件
     editDialogClosed()
     {
       this.$refs.editFormRoule.resetFields();
     },
     //修改用户信息并提交
     editUserInfo()
     {
       //调用表单验证的函数
       this.$refs.editFormRoule.validate(async valid=>{
         if(!valid) return
         //发送修改用户请求
         const {data:res} = await this.$http.put("users/"+this.editForm.id,{
          email:this.editForm.email,
          mobile:this.editForm.mobile
         })
         if(res.meta.status!==200)
         {
           return this.$message.error("更新用户信息失败！")
         }
         //关闭对话框
         this.editDialogVisible = false
         //刷新数据列表
         this.getUserList()
         //提示修改成功
         this.$message.success("更新成功！");
       })
     },
     //根据ID删除对应的用户
     async removeUserById(id){
       //  弹窗询问用户是否删除数据
       const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err)

         //如果用户确认返回字符串confirm
      //如果用户取消删除返回字符串cancel
       if(confirmResult!=="confirm")
       {
          return this.$message.info("已经取消删除")
       }
       //发送删除请求
       const {data:res} = await this.$http.delete("users/"
       +id)
            if(res.meta.status!==200)
            {
              return this.$message.error("删除用户失败!")
            }
         this.$message.success("删除用户成功!")
         this.getUserList()
      },
      //分配角色按钮
     async setRole(userInfo)
      {
          this.userinfo = userInfo
          //在展示对话框之前，获取使用的角色的列表
          const {data:res} = await this.$http.get("roles")
          if(res.meta.status!==200)
          {
            return this.$message.error("获取角色列表失败")
          }
          this.rolesList=res.data
          this.setRoleDialogVisible = true
      },
      //点击按钮分配角色.
     async saveRoleInfo(){
          if(!this.selectedRoleId)
          {
                return this.$message.error("请选择要分配的角色")
          }

          const {data:res} = await this.$http.put(`users/${this.userinfo.id}/role`, {
            rid:this.selectedRoleId
          })

          if(res.meta.status!==200)
          {
            return this.$message.error("更新角色失败!")
          }
           this.$message.success("更新角色成功")
           this.getUserList()
           this.setRoleDialogVisible = false
      },
      //监听分配角色对话框的关闭事件
        setRoleDialogClosed()
        {
          this.selectedRoleId= ""
          this.userinfo={}
        }
    }
 }
</script>

<style lang="less" scoped>
.el-table{
  margin-top: 15px;
}
</style>